All data are in degrees Fahrenheit

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Water temperature in Fukuoka

Detailed information about the current water temperature in Fukuoka. The trend over the last two weeks, daily averages, and precise forecast of the water temperature changes. Gain a deeper understanding of seasonal dynamics with monthly statistical analyses covering recent years.
Sea temperature in Fukuoka now

83.5

°F

August 14, 11:09

Trend:

increasing

Yesterday:

83.1°F

Tomorrow:

83.9°F

Sunrise:

05:39

Sunset:

19:07

Day Length:

13 h. 28 min.

Fukuoka in August

Minimum:

57.2°F

Average:

58.8°F

Maximum:

60.4°F

Sea water temperature in Fukuoka today

As of now, in Fukuoka, the water temperature is 83.5°F. Swimming in water of this temperature is considered highly warm and would be enjoyable for everyone. At this temperature, you can comfortably engage in water-based activities for extended periods without experiencing discomfort. Today's reading is 1.0°F higher than the average recorded on this particular day in recent years. Since yesterday, there was a slight increase in temperature. This indicates a warming trend over the past day. According to the forecast, we expect the temperature to rise a bit.

Recent sea temperature and forecast

Today's water temperature is considerably lower than the average registered over the last two weeks, indicating a slight cooling trend. It also aligns closely with the historical average temperature for this date, indicating a typical climate pattern. The maximum temperature recorded for this date was 85.1°F on 2022, while the historical minimum was 80.9°F on 2017.

Observations from the last two weeks indicate that the water temperature was in proximity to the highest values recorded on those days in the past. The forecast for the upcoming week suggests a gradual increase. The average temperature is expected to rise up to 83.9°F, with minimum temperature starting at 83.7°F, while the maximum might reach 84.1°F.

Daily water temperature in Fukuoka

Date Current Year

actual* / forecast**

last year 10 years average
Jul 31 86.8°F 82.7°F 83.1°F
Aug 1 86.2°F 83.2°F 83.4°F
Aug 2 86.1°F 84.4°F 83.6°F
Aug 3 86.1°F 84.8°F 83.8°F
Aug 4 87.1°F 84.9°F 83.8°F
Aug 5 86.7°F 85.3°F 84.0°F
Aug 6 86.6°F 83.9°F 83.7°F
Aug 7 87.2°F 83.6°F 83.6°F
Aug 8 86.1°F 83.1°F 83.6°F
Aug 9 85.5°F 82.9°F 83.4°F
Aug 10 85.0°F 82.0°F 82.5°F
Aug 11 84.2°F 81.6°F 82.1°F
Aug 12 84.0°F 82.1°F 82.0°F
Aug 13 83.1°F 81.6°F 82.1°F
Aug 14 83.5°F 83.2°F 82.6°F
Aug 15 83.9°F 85.1°F 82.9°F
Aug 16 84.0°F 86.1°F 83.0°F
Aug 17 83.8°F 86.3°F 82.9°F
Aug 18 83.7°F 86.3°F 82.7°F
Aug 19 83.8°F 86.0°F 82.9°F
Aug 20 84.0°F 86.1°F 83.0°F
Aug 21 84.1°F 86.4°F 83.2°F

* actual - actual temperature values

** forecast - projected values for the next week

Real-time coastal temperatures could deviate by several degrees from the provided readings. These deviations often become evident following intense rainfall or strong winds.

Our forecasting methodology leverages a mathematical model, that uses current water and weather conditions, historical records, wind intensity and direction.

Sea water temperature in Fukuoka by month

In Fukuoka, the months July through October offer comfortable swimming conditions, which amounts to 112 swimming days.
The warmest water in Fukuoka was recorded on July 28, 2026, reaching a 88.4°F. While the coldest temperature occurred on March 10, 2025, dipping to 51.7°F. The average readings by season are 58.5°F in Winter, 60.3°F in Spring, 78.0°F in Summer, and 73.5°F in Autumn.

Popular neighboring cities and resorts

City Water temperature* Distance**
Kitakyushu 86.4°F 30mi
Shimonoseki 85.3°F 39mi
Kumamoto 81.2°F 57mi
Nagasaki 82.5°F 66mi

* current water temperature in this city

** straight line distance from Fukuoka